Fin's Fish Guide
The Spotted knifejaw (Oplegnathus punctatus) is a saltwater fish of the family Oplegnathidae that grows up to 86 cm.
Asia: China, Taiwan/Ch Taipei, Guam, Hong Kong, Japan, Johnston I. and others
Description
The spotted knifejaw is a knifejaw (Oplegnathidae) from temperate reef waters of the northwest Pacific, off East Asia. The species grows to about 86 cm and has a deep, greyish body studded with dark spots, and teeth fused into a powerful, parrot-like beak. As a reef-dweller it uses this beak to crush sea urchins, shellfish and molluscs from rocks. It is a valued sport and food fish. The fish is harmless to humans.
Frequently asked questions
How do you recognise the Spotted knifejaw?
The Spotted knifejaw has a flattened, disc-shaped body, is mainly silver-grey and shows a spots pattern.
Where does the Spotted knifejaw live?
The Spotted knifejaw lives in the sea (marine waters) and is mostly found around stony or rocky ground. Asia: China, Taiwan/Ch Taipei, Guam, Hong Kong, Japan, Johnston I. and others
How big does the Spotted knifejaw get?
The Spotted knifejaw grows to a maximum of about 86 cm.
Is the Spotted knifejaw dangerous to humans?
No, the Spotted knifejaw is harmless to humans. This species is harmless to humans. No specific first aid is needed. Still handle the fish with care: mind the fin rays and the sharp edges of the gill cover, and rinse any scratch with clean water and cover it. For a dirty or deep wound check tetanus status.
Is the Spotted knifejaw edible?
Yes, the Spotted knifejaw is commonly eaten.
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Oplegnathus
More from the family Oplegnathidae
Want the complete picture on the Spotted knifejaw?
Point your camera at the fish and Fin names the species in seconds. Free, and the Spotted knifejaw is one of 12,519 species in the app.